Anyone else feel like nails scratching inside down there?

Madison💁🏼‍♀️ • Retailer// Married 6 yrs// Mommy to fraternal twin girls// surprise baby on the way!
Hard to explain, but almost like the sensation of fingernails scratching down there inside like by my cervix and bladder. Anyone else experience this? It happened twice just now again and VERY STRONG! I was walking and had to stop and grab my stomach lol. My coworkers thought I was going into labor and I had to explain myself 😂
35+2 with twins.